You can use working sets to group resources so that you can work on a set of resources
instead of working with the entire project. When you select a working set, only the
resources contained in the defined set appear in the Project Explorer view.
You can use a working set to build a set of resources of your project, instead of
building the entire project. To build resources using a working set, you must first
define a
working set with the resources that you want to include in the
build.
Note: Resources excluded from the build are not considered during the
build, even if you add these resources to a working set.